Congruent Triangle Resources

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How many pieces of information are needed to prove two triangles are congruent?

What are the different ways this can be done?



Consider these interactives:

http://nlvm.usu.edu/en/nav/frames_asid_165_g_1_t_3.html?open=instructions
http://www.mathopenref.com/congruentsas.html
http://www.ies.co.jp/math/products/geo1/applets/rottria/rottria.html
http://www.ies.co.jp/math/java/geo/rottrib/rottrib.html






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